不锈钢催化电极在氧析出中的研究进展

Research Progress of Stainless Steel Catalytic Electrode Towards Oxygen Evolution

随着日益增长的低碳减排需求,氢的绿色制取技术受到广泛重视,利用可再生能源进行电解水制氢是目前众多氢气制备方法中碳排放量最低的工艺。电解水过程由析氢反应(HER)和析氧反应(OER)两个反应构成,其中,OER需要四电子参与,反应动力学较慢,需要较高的过电位,消耗能量较高。目前,缺乏高效、廉价的OER催化剂成为制约电解水制氢发展的主要瓶颈。相比于已报道的许多贵金属催化剂而言,不锈钢基材料具有高导电性、低成本且表现出较好的OER性能,因此受到广泛关注,如何进一步提高不锈钢材料的电化学催化活性是现阶段研究的热点。本文综述了不锈钢基材料作为OER催化材料的研究进展,总结了提升OER催化性能的策略,最后对不锈钢基OER催化电极的发展进行了展望。本文将为不锈钢基催化电极的水氧化反应研究提供十分重要的参考价值。

With the increasing demand of low carbon emission reduction,the green hydrogen production technology has been paid great attention.Hydrogen production from water electrolysis using renewable energy is one of the lowest carbon emission method among many hydrogen producing technology.The water electrolysis process consists of hydrogen evolution reaction(HER)and water oxidation reaction(OER).OER undergoes a four electrons reaction,which presents a slow reaction kinetics and requires high overpotential as well as consumes high energy.At present,the lack of efficient and cheap OER catalyst has become the main bottleneck restricting the development of hydrogen production from electrolytic water.Compared with noble metal catalysts,stainless steel-based materials with high conductivity,low cost and excellent OER catalytic activity have attracted widespread attention.The investigations concerning further improve the electrochemical catalytic activity of stainless steel-based materials is the focus of current research.This paper reviews the research progress of stainless steel-based material towards OER,summarizes the strategies for improving the OER catalytic performance and finally prospects the development of stainless steel-based OER catalytic electrode.This paper will provide a very important reference for the investigation of water oxidation reaction of stainless steel based catalytic electrode.